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Kelas: XI (SMA)
Kategori: Garis Singgung
Pembahasan:
Titik Pusat P(0,0)
Jari-jari-> r^2 = 16
-> r = 4
Gradien garis
3x+4y+2=0
4y = -3x -2
________ : 4
y = -3/4 x - 1/2
Maka m = -3/4
Pers. Garis singgung
y - b = m(x - a) +_ r akar 1+m^2
y - 0 = -3/4x + 0 +_ 4 akar 16/16 + 9/16
y = -3/4x +_ 4 × 5/4
_______________ × 4
4y = -3x +_ 20
-3x - 4y +_ 20 = 0